Rubbing and polishing device for automobiles



June 26, 1928.

' J. M. MORATTA RUBBING AND POLISHING DEVICE FOR AUTOMOBILES Filed April 1927 2 Shets-Sheet 1 j J. M. MORATTA RUBBING AND POLISHING DEVICE FOR AUTOMOBILES Filed April 8, 1927 z sneets-she'et 2 June 26, 1928.

Inventor Jflflamtfia, I

' By Attorney Patented June 26, 1928.

UNITED STATES JOHN M. 'MORATTA, OE DETROIT, MICHIGAN. I

RUBIBING AND POLISHING DEVICE FOR AUTOMO BILES.

Application filed April 8,

This invention relates generally to rotary and polishing devices and has more particular reference to a portable electrically operated-device that is primarily though not specifically adapted for use in the rubb1ng and polishing of automobile bod es after the same have been varnished, painted or otherwise coated.

In carrying out the present invention there is provided a highly novel, simple and efiicient device of this character that may be readily held in the hands of an operator so that the same may be engaged with all parts of an automobile body for properly rubbing and polishing the same.

One of the most important objects of this invention is to provide a'small and compact device of this character wherein the polishing wheel may be readily removed so as to facilitate the application of new rubbing or polishing material thereto.

In the drawings wherein like reference characters indicate corresponding parts throughout the various views:

Figure 1 is a rear side elevation of my improved device.

Figure 2. is an edge elevation.

Figure 3 is an enlarged fragmentary section through the rotating polishing and rubbing wheel as well as the removable bearing units for the shaft of the wheel.

Figure 4 is a vertical section through one of the shaft end bearings.

Figure 5 is a perspective of a removable bearing for the motor armature shaft, and the opposite end of the polishing wheel shaft.

Figure 6 is a fragmentary perspectiveof the polishing wheel shaft, and

Figure 7 is a section through the center of the polishing wheel and its carrying shaft. I

Now having particular reference, to the drawings, 5 designates a small high speed electric motor, the casing of which is formed with a U-shaped shaft hanger, the spaced parallel arms of which are designated respectively 6 and 7, the arm 6 being hollow as clearly indicated in Figure 3 so that the armature shaft 8 of the motor may freely rotate therein. The lower end of said hollow arm 6 is enlarged and is formed with an open, squareshaped boxing 9. Removably disposed within this boxing 9 is a block bearing 10 formed with a rectangular recess 11 open at one side, said recess being formed 1927. Serial N0. 182,131.

in that face of the bearing block which is ad acent the end of the armature shaft. The bottom of this recess is provided with a circular socket 12 for receiving the end of the motor armature shaft 8, while arranged upon this shaft within the flanges 11 of the said block 10 is a small bevel gear 13. The side walls of the boxing 9 of the shaft hanger arm 6 are formed with registering openings, while the bearing block 10 is alsoformed with bores 14 for registering with the openings in the side walls of the boxing 9 to facilitate the rigid attachment of the hearing within the boxing by screws or other fasteners 15.

The inner face of the bearing block 10 is also formed with a circular opening 16 for supporting the adjacent end of a'shaft 17, the opposite end of this shaft 17 being detachably arranged within a bearing cup 18, which is socketed for receiving the lower end of the arm 7 ofsaid shaft hanger, while as clearly disclosed in both .Eigures 3 and 4, the lower end of said arm 7 is channeled to engage the shaft end for combining with the bearing 18 to provide a proper sup out for that particular end'of the shaft. aid shaft bearing 18 being rigidly but removably secured to the arm 7 by screws or other suitable fasteners 19.

The shaft 17 directly inwardly of the block bearing 10 is equipped'with a large bevel gear 20 having mesh with the beveled gear 13 of the armature shaft 8 for obviously causing the rotation .of the brush shaft 17 during the operation of the motor.

The shaft 17 is provided throughout substantially its entire length with a platesoaked with glue or other hardening material so that the center or core of ,the wheel will be of a hardened nature. The center of this wheel 23 is formed with a. bore for receiving the shaft .17, while extending throughout substantially the entire width of the wheel at opposite sides of the bore .are opposed slots 2424 for receiving the opposite sides of the shaft key 21, these slots opening at one end of the wheel 23 but terminating slightly inwardly of the wheel at the end ad acent the thrust plate 22, so as to limit the movement of the wheel in one direction upon said shaft. Obviously this construction affords a positive connection between the wheel and the shaft so that the wheel will be properly rotated during the operation of the device. Furthermore by reason of this particular connection together with the removable thrust plate 22 as well as the particular bearing connections between the shaft 17 and the shaft hanger, the entire cloth buffer as well as its bearings may be readily removed, while the cloth buffer may be easily removed from the shaft whenever desired, this of course permitting of the cleaning of the bearing or the renewal of the samefas well as the renewal of the cloth buffer itsel Having thus described the invention, what I claim is z- 1. In a polishing device of the character described an electric motor, a U-shaped shaft hanger mounted on the motor, one arm of the hanger bein hollow for receiving the armature shaft of the motor,'a removable bearing block mounted in the vlower end of said hollow arm and having a recess open at one side and formed in that face of the block which is adjacent the end of the armature shaft, the bottom of the recess being provided with a socket for receiving the motor armature shaft, a shaft arranged at one end within a socket within the inner face of said bearing block, a bearing block for receiving the op osite end of the second shaft, means for f of said bearing block to the end of the other arm of the shaft hanger, a gear on the armature shaft, a gear on the second shaft, said gears meshing with each other, theifirst ear being rotatable on said recess, and a o ishing wheel arranged on said second s aft.

2. In a polishing device of the character described, an electric motor, a U-shaped shaft hanger mounted on the motor, one

' arm of the hanger being hollow for receivingthe armature shaft of the motor, a removable bearing block mounted in the lower end of said hollow arm and having a recess open at one side and formediin that face of t 0 block which is adjacent the end of the armature shaft, the bottom of the recess b.eing provided with a socket for receiving the acilitating the attachment.

motor armature shaft, a shaft arranged at one end within a socket within the inner face of said bearing block, a bearing block for receiving the opposite end of the second shaft, means for facilitating the attachment of said bearing block to the end of the other arm of the shaft hanger, a gear on the armature shaft, a gear on the second shaft, said gears meshing with each other, the first gearing being rotatable on said recess, and a polishing wheel arranged on said second shaft, said wheel consisting of a plurality of circular strips of material having a hardened center and having a bore through its center for receiving the second shaft, means between the center of the Wheel and said second shaft for keying the wheel to the second shaft.

3. In a polishing device of the character described, an electric motor, a U-shaped shaft hanger mounted on the motor and including a pair of s aced parallel arms, one of the arms exten ing from the center of the motor and being hollow for receiving the a motor armature shaft, a detachable bearing block in the lower-end of the hollow arm and constructed forsup orting the lower end of the armature sha t, a shaft detachably mounted at one end with said bearing block, a bearing for the opposite end of the shaft, a detachable connection with the bearing and the other arm of said shaft hanger, a polishing brush removably mounted on. said shaft, and a driving connection between the shaft and the motor armature shaft.

4 In a polishing device of the character described, an electric motor a U-shaped shaft hanger mounted on the motor and including a pair of spaced parallel arms, one of the arms extending from the center of the motor and being hollow for receiving the motor armature shaft, a detachable bearing block in the lower end of the hollow arm supporting the lower end of the armature shaft, a. shaft detachably mounted at one end in said bearin block, a bearing for the opposite end of t e shaft, detachably connected with the other arm of said shaft hanger, a polishing wheel removably mounted on said shaft, a driving connection between the shaft and the motor armature shaft, said polishing wheel consisting of a plurality of strips of cloth arran ed about the second shaft and keyed to t e second shaft. I

In testimony whereof I afiix' my signature.

JOHN M. MORATTA. 

